Title (fr)

Publication

Application

Priority

FR 9800992 W 19980519

FR 9706315 A 19970523

Abstract (en)

[origin: FR2763685A1] The invention concerns an apparatus for measuring the evolution of optical characteristics in a circulating liquid or gas medium, by directly measuring the light diffused through the medium, said apparatus comprising: a sensor (100) with a passage (111) traversed by the medium to be measured; a monochromatic light source stabilised on a wavelength (112) directed through (XX) the passage (111); a photodetector (121) aligned on the source (112) on the other side of the passage (111); a flow meter (140); an operating circuit (200) consisting of a circuit powering (115) the laser (112) and formatting (210) the photodetector (100) signals, and a processing circuit (220) to evaluate the sensor (100) and flow meter signals and supply representative data. The apparatus simultaneously measures the cloudiness, the flow rate, the temperature and counts the particles suspended in the fluid.